Gruts is an album by Ivor Cutler, originally released in 1986 on Rough Trade Records. Track listing "I'm Happy" "Gruts for Tea" "A Red Flower" "Shoplifters" "How to Make a Friend" "Fish Fright" "Da
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56301ff593f33897ff01acb7e150adfda3fb040ae276fbe95af7aac5a01d645. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e26cc6a4-91e9-4508-998e-67ebe84f54e5.json and https://artists.proofprofile.net/proofs/artist/e26cc6a4-91e9-4508-998e-67ebe84f54e5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).